|St Charles County Sheriff's Office||O'Fallon||Missouri 63366|
|St Louis County Sheriff's Office||Clayton||Missouri 63105||20 miles|
|Lincoln County Sheriff's Office||Troy||Missouri 63379||20 miles|
|Warren County Sheriff's Office||Warrenton||Missouri 63383||26 miles|
|Calhoun County Sheriff's Office||Hardin||Illinois 62047||26 miles|
|Franklin County Sheriff's Office||Union||Missouri 63084||28 miles|
|Jersey County Sheriff Department||Jerseyville||Illinois 62052||30 miles|
|Jefferson County Sheriff Department||Hillsboro||Missouri 63050||38 miles|
|Madison County Sheriff's Office||Edwardsville||Illinois 62025||39 miles|
|Greene County Sheriff's Office||Carrollton||Illinois 62016||39 miles|
|St Clair County Sheriff's Office||Belleville||Illinois 62220||41 miles|
|Gasconade County Sheriff's Office||Hermann||Missouri 65041||41 miles|
|Monroe County Sheriff's Office||Waterloo||Illinois 62298||42 miles|
|Montgomery County Sheriff's Office||Montgomery||Missouri 63361||47 miles|
|Pike County Sheriff's Office||Bowling Green||Missouri 63334||48 miles|
|Macoupin County Sheriff's Office||Carlinville||Illinois 62626||56 miles|
|Pike County Sheriff's Office||Pittsfield||Illinois 62363||58 miles|
|Washington County Sheriff's Office||Potosi||Missouri 63664||59 miles|
|Scott County Sheriff's Office||Winchester||Illinois 62694||60 miles|
|Ste Genevieve County Sheriff's Office||Ste. Genevieve||Missouri 63670||66 miles|
A sheriff is an elected law enforcement official who serves a specific county. Many of the responsibilities of the sheriff overlap with those of local police departments. The biggest difference is that a sheriff has jurisdiction over the entire county, while police departments can only enforce laws within city limits.
While sheriffs share law enforcement duties with city police officers, their degree of responsibility varies by jurisdiction. Municipalities with limited resources often contract law enforcement services to the sheriff, especially for complex crimes where they may not be equipped to conduct a detailed investigation.
Sheriffs tend to be more involved in cases where a suspect operates across city lines. Since they have the authority to investigate crimes and make arrests in any city in their jurisdiction, they often act as a bridge between various municipal law enforcement agencies in that jurisdiction.